Rest-frame UV and near-IR for the galaxies in the sample. From top to bottom: HST/F160W, MIRI/F560W, MIRI/F770W, MIRI/F1280W, and MIRI/F1800W images for the three DSFGs and the LBG at z = 4.05, tracing the rest-frame ∼0.3 μm, 1.1 μm, 1.5 μm, 2.5 μm, and 3.5 μm emission, respectively. White contours represent the F560W isophotes at 5σ, 10σ, 20σ, and 35σ levels, where σ is the standard deviation of the background emission of each image. Dashed-line circles and ellipses represent the apertures used to extract the integrated flux for each object. Filled white circles at the lower right corner of the left-most panels show the PSF size for each image. The (0,0) positions mark the brightest pixel in the F560W image for each object. Blue contours in the second-row panels display the PdBI CO(6-5) emission for the DSFGs presented in Carilli et al. (2010) and Hodge et al. (2013).